piniaのstoreToRefsでundefinedになった時

export const useCounterStore = defineStore('counter', () => {
  const a = ref(0);
  const b = 1;
  return {a, b}
})

const {a, b} = storeToRefs(useCounterStore());

// こうか
const b = useCounterStore().b;
// こう
const {b} = useCounterStore();

    store = toRaw(store)

    const refs = {} as StoreToRefs<SS>
    for (const key in store) {
      const value = store[key]
      if (isRef(value) || isReactive(value)) {
        // @ts-expect-error: the key is state or getter
        refs[key] =
          // ---
          toRef(store, key)
      }
    }